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Skitter data using Hypviewer: Internet Atlas Gallery

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Skitter data using Hypviewer: Internet Atlas Gallery

skitter Data Using hypviewer

Cooperative Association for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)

This image shows that many paths from our skitter source monitor (riesling.caida.org) traverse 204.70.1.197. The source is not visible, but is in one of the clouds to the left of the sphere. Note the high outdegree of 204.70.1.197: it has many next hops. There are also a number of large networks behind this router, as seen by the clusters of nodes and links visible behind the fanout on the right side of the sphere.

Visualization Thumbnail Analysis
Data
. . . Sources
. . . Specification
. . . Aggregation
. . . Filters
Visualization
. . . Techniques
. . . Key Mappings
. . . Tools
Evaluation
. . . Strengths
. . . Issues
Credits/Contact Info
. . . Authors
. . . Contact Info
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Additional Content

Internet Atlas Gallery

skitter Data Using hypviewer

Cooperative Association for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)
URL: https://www.caida.org/catalog/software/skitter/viz/hypview/hypskit.ip
Visualization Thumbnail About the Data
Data Sources:
(Source1): skitter dataset for source riesling.caida.org from 18 February 1999.
Data Specification:
(Data1): roughly 29,000 IP addresses (nodes)
(Data2): Path connectivity derived from forward IP hops.
Data Aggregation:
(Aggregate1): None.
Data Filters:
(Filter1): May remove all leaf nodes.
(Filter2): May remove non-tree links.
(Filter3): May remove node labels.
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Internet Atlas Gallery

skitter Data Using hypviewer

Cooperative Association for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)
URL: https://www.caida.org/catalog/software/skitter/viz/hypview/hypskit.ip
Visualization Thumbnail Evaluation
Strengths:
(Strength1): More information can be seen amid less clutter. This is particularly useful when considering both global topological structure as well as local domain- or node-specific characteristics.
(Strength2): Motion by hyperbolic isometries provides mathematically elegant navigation.
Issues:
(Issue1): Method depends on the existence of enough domain-specific information (e.g., about the network backbone) to derive a good spanning tree.
(Issue2): Method 'hides' some data at the edges in order to provide a central focus, so visualization of all data works better interactively than as a still image.
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Internet Atlas Gallery

skitter Data Using hypviewer

Cooperative Association for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)
URL: https://www.caida.org/catalog/software/skitter/viz/hypview/hypskit.ip
Visualization Thumbnail About the Visualization
Visualization Techniques:
(Technique1): Use network domain and routing data to construct a spanning tree for a directed graph.
(Technique2): Rely on the property exhibited in a hyperbolic sphere or hemisphere where the area represented increases exponentially as the radius increases. Then, even when there are hundreds of thousands of nodes, a large portion of the directed graph surrounds a central node focal point while all other nodes are compressed at the edges to provide context (like a fish-eye lens). Achieve this focus by using a simple, optimized cone tree layout algorithm for hyperbolic space where children are layed out in concentric bands on the surface of a calculated hemispheric cap on the cone.
Key Visualization Mappings:
(Mapping1): Outgoing links are reddish.
(Mapping2): Incoming links are blue.
(Mapping3): Router nodes are colored yellow. Directly connected hosts are green, and indirectly connected hosts are red.
(Mapping4): Nodes and links to the right of the graph are parents. Nodes and links to the left are children. (Mapping5): Nodes may be labeled with their IP address.
Visualization Tools:
(Tool1) hypviewer by Tamara Munzner
(Tool2) skitter data conversion by Daniel McRobb.
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Internet Atlas Gallery

skitter Data Using hypviewer

Cooperative Assocation for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)

 URL: https://www.caida.org/catalog/software/skitter/viz/hypview/hypskit.ip
Visualization Thumbnail Credits / Contact Info
Authors:
  • Tamara Munzner, hypviewer
  • Daniel McRobb, data conversion
Contact Info:
For further information, send email to:
info @ caida.org
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